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Method
Rel. frost
Last spring frost (0°C) 20 May Frost 1 of 4 years · 20 years of data
Frost-free season 135 days 20 May – 2 Oct
Probability that frost is over

75% = Half of years are frost-free by this date. More about frost & season →

Custom date
Note: This location has a shorter growing season. Plants marked with Fleece, Greenhouse or Season too short need extra protection or are difficult to grow here.

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
1 – 15 Apr
12 Jun
5-7 wk
20 May
17 Jul
0 wk
21 May
7 Jul
0 wk
Broccoli
Brassica oleracea (Italica-gruppen)
8 – 22 Apr
24 Jun
4-6 wk
20 May
22 Jul
0 wk
21 May
12 Jul
0 wk
Chili pepper
Capsicum annuum
Greenhouse
3 – 31 Mar
16 Apr
8-12 wk
26 May
11 Jun
1 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
1 – 15 Apr
7 Jun
5-7 wk
20 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Garden cucumber
Cucumis sativus
24 – 31 May
28 May
3-4 wk
21 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
17 – 24 May
31 May
4-5 wk
21 Jun
28 Jun
5 wk after
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Season too short
31 May – 7 Jun
3-4 wk
28 Jun
6 wk after
Onion
Allium cepa (Cepa-gruppen)
25 Feb – 25 Mar
28 Mar
8-12 wk
20 May
23 May
0 wk
2 Jun
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
21 May
12 Jun
0 wk
21 May
2 Jun
0 wk
Maize
Zea mays
5 – 12 May
18 May
3-4 wk
2 Jun
8 Jun
2 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
24 Apr – 1 May
1 Jul
3-4 wk
22 May
22 Jul
0 wk
2 Jun
12 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
20 May
2 Jul
0 wk
20 May
22 Jun
0 wk
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
1 – 15 Apr
7 Jun
5-7 wk
20 May
12 Jul
0 wk
20 May
2 Jul
0 wk
Potato
Solanum tuberosum
18 Apr – 2 May
26 May
4-6 wk
30 May
23 Jun
1 wk after
30 May
13 Jun
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
1 – 15 Apr
17 Jun
5-7 wk
20 May
22 Jul
0 wk
21 May
12 Jul
0 wk
Pumpkin
Cucurbita pepo
24 – 31 May
15 Jun
3-4 wk
21 Jun
6 Jul
5 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
24 Apr – 1 May
11 Jun
3-4 wk
22 May
2 Jul
0 wk
2 Jun
22 Jun
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
8 – 22 Apr
19 Jun
4-6 wk
20 May
17 Jul
0 wk
Lettuce
Lactuca sativa
22 – 29 Apr
6 Jul
3-4 wk
20 May
27 Jul
0 wk
21 May
17 Jul
0 wk
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
8 – 22 Apr
19 Jun
4-6 wk
20 May
17 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
22 Apr – 6 May
29 May
2-4 wk
20 May
12 Jun
0 wk
20 May
2 Jun
0 wk
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
21 May
12 Jun
0 wk
21 May
2 Jun
0 wk
Spinach
Spinacia oleracea
22 – 29 Apr
21 Jul
3-4 wk
20 May
11 Aug
0 wk
17 May
1 Aug
0 wk
Sweet potato
Ipomoea batatas
14 – 28 Jun
4-6 wk
26 Jul
10 wk after
Garden tomato
Solanum lycopersicum
7 – 21 Apr
27 Apr
6-8 wk
2 Jun
8 Jun
2 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
5 – 19 May
17 Jun
2-4 wk
2 Jun
1 Jul
2 wk after
2 Jul
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
8 – 22 Apr
19 Jun
4-6 wk
20 May
17 Jul
0 wk
Garden pea
Pisum sativum
22 – 29 Apr
21 Jun
3-4 wk
20 May
12 Jul
0 wk
21 May
2 Jul
0 wk

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
10 – 24 May
24 May
4-6 wk
21 Jun
21 Jun
5 wk after
Lemon balm
Melissa officinalis
11 – 25 Mar
17 May
8-10 wk
20 May
12 Jul
0 wk
14 Jun
2 Jul
4 wk after
Dill
Anethum graveolens
21 May
22 Jul
0 wk
Wild chives
Allium schoenoprasum
25 Mar – 8 Apr
31 May
6-8 wk
20 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Spearmint
Mentha spicata
25 Feb – 25 Mar
17 May
8-12 wk
20 May
12 Jul
0 wk
14 Jun
2 Jul
4 wk after
Coriander
Coriandrum sativum
20 May
11 Aug
0 wk
2 Jun
1 Aug
2 wk after
Garden sage
Salvia officinalis
13 – 27 Mar
2 May
8-10 wk
22 May
27 Jun
0 wk
Common thyme
Thymus vulgaris
11 – 25 Mar
7 May
8-10 wk
20 May
2 Jul
0 wk
Oregano
Origanum vulgare
25 Mar – 8 Apr
21 May
6-8 wk
20 May
2 Jul
0 wk
14 Jun
22 Jun
4 wk after
Parsley
Petroselinum crispum
25 Mar – 8 Apr
21 May
6-8 wk
20 May
2 Jul
0 wk
21 May
22 Jun
0 wk
Rosemary
Salvia rosmarinus
13 Feb – 13 Mar
2 Apr
10-14 wk
22 May
11 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
24 – 31 May
31 May
3-4 wk
21 Jun
21 Jun
5 wk after
Cornflower
Centaurea cyanus
20 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Statice
Limonium sinuatum
24 Mar – 7 Apr
2 May
8-10 wk
2 Jun
27 Jun
2 wk after
Sweet William
Dianthus barbatus
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
30 May
1 wk after
Snow-on-the-mountain
Euphorbia marginata
7 – 21 Apr
16 May
6-8 wk
2 Jun
27 Jun
2 wk after
26 Jul
10 wk after
Pinnate dahlia
Dahlia × pinnata
5 – 19 Apr
20 May
6-8 wk
31 May
1 Jul
2 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
19 Apr – 17 May
3 Jun
4-8 wk
14 Jun
1 Jul
4 wk after
14 Jun
21 Jun
4 wk after
Foxglove
Digitalis purpurea
11 – 25 Mar
8-10 wk
20 May
0 wk
2 Jun
2 wk after
Busy lizzie
Impatiens walleriana
29 Mar – 26 Apr
18 Jun
8-12 wk
21 Jun
13 Aug
5 wk after
Creeping zinnia
Sanvitalia procumbens
7 – 21 Apr
26 May
6-8 wk
2 Jun
7 Jul
2 wk after
Hyacinth bean
Dolichos lablab
Season too short
21 Apr – 5 May
1 May
4-6 wk
2 Jun
2 wk after
Chinese lantern
Physalis alkekengi
13 – 27 Mar
17 Apr
8-10 wk
22 May
12 Jun
0 wk
Love in a mist
Nigella damascena
20 May
27 Jun
0 wk
21 May
17 Jun
0 wk
Strawflower
Xerochrysum bracteatum
7 – 21 Apr
6 May
6-8 wk
2 Jun
17 Jun
2 wk after
26 Jul
10 wk after
Purple-top vervain
Verbena bonariensis
27 Feb – 27 Mar
17 Apr
8-12 wk
22 May
12 Jun
0 wk
Cardoon
Cynara cardunculus
Fleece
3 – 31 Mar
18 Mar
8-12 wk
26 May
1 wk after
Regal-foxtail
Ptilotus nobilis
29 Mar – 26 Apr
16 Apr
8-12 wk
21 Jun
5 wk after
Globe amaranth
Gomphrena globosa
26 Apr – 10 May
30 Apr
6-8 wk
21 Jun
5 wk after
Corn poppy
Papaver rhoeas
20 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Snapdragon
Antirrhinum majus
25 Feb – 25 Mar
7 May
8-12 wk
20 May
2 Jul
0 wk
30 May
22 Jun
1 wk after
Flossflower
Ageratum houstonianum
12 – 26 Apr
12 May
8-10 wk
21 Jun
7 Jul
5 wk after
Sweet pea
Lathyrus odoratus
25 Mar – 15 Apr
28 May
5-8 wk
20 May
2 Jul
0 wk
Stock
Matthiola incana
25 Mar – 8 Apr
31 May
6-8 wk
20 May
12 Jul
0 wk
2 Jun
2 Jul
2 wk after
Wormwood
Artemisia absinthium
25 Mar – 8 Apr
1 May
6-8 wk
20 May
12 Jun
0 wk
2 Jun
2 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
Fleece
21 Apr – 5 May
16 May
4-6 wk
2 Jun
13 Jun
2 wk after
Garden pansy
Viola × wittrockiana
11 – 25 Mar
17 May
8-10 wk
20 May
12 Jul
0 wk
30 May
2 Jul
1 wk after
Petunia
Petunia
10 Mar – 7 Apr
2 May
8-12 wk
2 Jun
27 Jun
2 wk after
Sweet Scabious
Scabiosa atropurpurea
27 Mar – 10 Apr
1 May
6-8 wk
22 May
12 Jun
0 wk
2 Jul
6 wk after
Common zinnia
Zinnia elegans
21 Apr – 5 May
31 May
4-6 wk
2 Jun
28 Jun
2 wk after
Common morning glory
Ipomoea purpurea
17 – 31 May
31 May
3-5 wk
21 Jun
21 Jun
5 wk after
Garden cosmos
Cosmos bipinnatus
21 Apr – 5 May
3 Jun
4-6 wk
2 Jun
1 Jul
2 wk after
2 Jul
6 wk after
Scarlet milkweed
Asclepias curassavica
19 Apr – 17 May
16 May
8-12 wk
12 Jul
8 wk after
Bee balm
Monarda didyma
25 Feb – 25 Mar
17 Apr
8-12 wk
20 May
12 Jun
0 wk
14 Jun
4 wk after
Yarrow
Achillea millefolium
25 Mar – 8 Apr
1 Apr
6-8 wk
20 May
0 wk
2 Jun
2 wk after
Safflower
Carthamus tinctorius
20 May
12 Jun
0 wk
21 May
2 Jun
0 wk
Iceland poppy
Papaver nudicaule
Season too short
25 Mar – 8 Apr
21 May
6-8 wk
20 May
2 Jul
0 wk
4 May
22 Jun
2 wk before
Bishop's flower
Ammi majus
8 – 22 Apr
4 Jun
4-6 wk
20 May
2 Jul
0 wk
2 Jun
22 Jun
2 wk after
Drumsticks
Pycnosorus globosus
Fleece
10 – 24 Mar
2 Apr
10-12 wk
2 Jun
11 Jun
2 wk after
Sunflower
Helianthus annuus
5 – 12 May
10 Jun
3-4 wk
2 Jun
1 Jul
2 wk after
14 Jun
21 Jun
4 wk after
China aster
Callistephus chinensis
7 – 21 Apr
30 May
6-8 wk
2 Jun
11 Jul
2 wk after
2 Jul
6 wk after
Annual phlox
Phlox drummondii
31 Mar – 14 Apr
26 May
6-8 wk
26 May
7 Jul
1 wk after
2 Jul
6 wk after
Hollyhock
Alcea rosea
25 Mar – 8 Apr
6-8 wk
20 May
0 wk
2 Jun
2 wk after
Alpine delphinium
Delphinium elatum
25 Feb – 25 Mar
17 Apr
8-12 wk
20 May
12 Jun
0 wk
14 Jun
4 wk after
African marigold
Tagetes erecta
7 – 21 Apr
26 May
6-8 wk
2 Jun
7 Jul
2 wk after
Black-eyed Susan
Rudbeckia hirta
27 Mar – 10 Apr
20 May
6-8 wk
22 May
1 Jul
0 wk
2 Jul
6 wk after
Wood sage
Salvia nemorosa
11 – 25 Mar
7 Apr
8-10 wk
20 May
2 Jun
0 wk
14 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
12 Apr – 10 May
10 May
6-10 wk
21 Jun
21 Jun
5 wk after
California goldenpoppy
Eschscholzia californica
20 May
12 Jul
0 wk
21 May
2 Jul
0 wk
Painted tongue
Salpiglossis sinuata
24 Mar – 7 Apr
3 May
8-10 wk
2 Jun
28 Jun
2 wk after
Water forget-me-not
Myosotis scorpioides
25 Mar – 8 Apr
1 May
6-8 wk
20 May
12 Jun
0 wk
2 Jun
2 Jun
2 wk after